Module Description

The module implements roster support, specified in RFC 6121. Includes support for XEP-0237: Roster Versioning. It can sometimes become quite a heavyweight feature, so there is an option to disable it.


  • iqdisc (default: one_queue)
  • versioning (boolean, default: false): Turn on/off support for Roster Versioning.
  • store_current_id (boolean, default: false): Stores the last roster hash in DB (used in Roster Versioning). Improves performance but should be disabled, when shared rosters are used.
  • backend (atom, default: mnesia): Storage backend. Currently mnesia, odbc and riak are supported.

Example configuration

{mod_roster, [
               {versioning, true},
               {store_current_id, true}